On Mon, 14 Feb 2005 12:12:01 -0600 (CST), Nate Carlson <natecars at real-time.com> wrote: > Do you have a md4p1 device? > > AFAIK, you're not supposed to put partitions on md devices, although it is > possible. Looking at /dev/ seems to agree with this: > > In any case, if you just use md4, should work fine. > I did some work bases off of your thoughts, here's the output. [root at netman etc]# fdisk -l /dev/md4 Disk /dev/md4: 36.3 GB, 36388339712 bytes 2 heads, 4 sectors/track, 8883872 cylinders Units = cylinders of 8 * 512 = 4096 bytes Device Boot Start End Blocks Id System [root at netman etc]# ll /dev/md4 brw-rw---- 1 root disk 9, 4 Jun 24 2004 /dev/md4 [root at netman etc]# vgcreate /dev/vg01 /dev/md4 vgcreate -- no valid physical volumes in command line [root at netman etc]# fdisk -l /dev/md4 Disk /dev/md4: 36.3 GB, 36388339712 bytes 2 heads, 4 sectors/track, 8883872 cylinders Units = cylinders of 8 * 512 = 4096 bytes Device Boot Start End Blocks Id System /dev/md4p1 1 8883872 35535486 8e Linux LVM [root at netman etc]# ll /dev/md4* brw-rw---- 1 root disk 9, 4 Jun 24 2004 /dev/md4 [root at netman etc]# vgcreate /dev/vg01 /dev/md4p1 vgcreate -- no valid physical volumes in command line I first removed the partitions off of the md4 device, then tried again with them. According to documentation, I should be able to use the RAID devices as I would with any other disk device. For the record, this is an RHELv3-ES system. On initial install of the system, I'm able to select and create RAID5 devices and then put LVM on top of it. However, this is after the box is created. Thanks for the help on it, Nate. Any other thoughts? -- -Shawn -Nemo me impune lacessit. Ne Obliviscaris..